US 8,297,278 B2Granted

Dry powder inhaler

AssigneeVectura Delivery Devices Limited

InventorsQuentin Harmer, Roger William Clarke, Stephen William Eason

Life of this patent

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Abstract

An Inhaler for delivering an aerosolised dose of a powdered drug for inhalation by a user is disclosed. The inhaler comprises a drug entreinment device to a receive a package having a piercable lid containing a dose to be delivered, the device including a drug outlet tube terminating with a primary piercing element to pierce an opening in said lid when a package is located in the inhaler, a secondary piercing member to pierce a plurality of peripheral openings in said lid and, an airflow path to enable the supply of a charge of gas into the package via said peripheral openings to scour the interior of a pierced package such that all or substantially all of the dose is entrained in the gas and flows out of the package via the drug outlet tube. A medicament pack is also disclosed.

Claims22

Dependent claims

A dry powder inhaler for delivering a dose of medicament for inhalation by a user, the dose being contained in a medicament pack having an interior and a puncturable lid, the inhaler comprising a drug entrainment device including a drug outlet tube terminating with a primary piercing element to pierce an opening in said lid when the medicament pack is located in the inhaler, a piercing member having a plurality of secondary piercing elements to pierce a plurality of peripheral openings in said lid and, an airflow path to enable the supply of a charge of gas into the medicament pack via said peripheral openings to scour the interior of the pierced medicament pack such that substantially all of the dose is entrained in the gas and flows out of the medicament pack via the drug outlet tube, the secondary piercing member being configured to form a substantially circular pattern or ring of openings in the lid of a blister, wherein the piercing member is formed from a sheet of material and the secondary piercing elements are bent out of the plane of the sheet.

Dependencies are inferred from the claim text.

Facts

Application: 12/892,528Filed 28 Sep 2010 · continuation
Priority: GB 0321609.015 Sep 2003
Published: US 2011/0073106 A131 Mar 2011
Granted: 30 Oct 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61M 15/0028
Inhalators: using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up
A61M 11/001
Sprayers or atomisers specially adapted for therapeutic purposes: particle size control
A61M 15/003
Using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up: using capsules, e.g. to be perforated or broken-up
A61M 15/0036
Piercing means: hollow piercing means

Family

PCT/GB2004/003940Parent of this continuation · filed 15 Sep 2004
US 2011/0073106 A1Pre-grant publication · published 31 Mar 2011
Application10/571,725Parent of this continuation
US 7,810,494 B2Parent of this continuation
US 2007/0074721 A1Published application
US 8,297,278 B2This patent

From the US filing history. Foreign family members aren’t listed.